A woman singing joyfully with her eyes closed in the driver's seat of a car, sunlit coastline behind her, illustrating how singing builds vagus nerve tone.

Christopher Bray - 3 October 2026 - 7:07 am

Tuning the Vagus: Why Humming, Singing, and Gargling Are Workouts for Recovery

Key Takeaways: The vagus nerve carries roughly eighty percent afferent and twenty percent efferent fibers between the brainstem and nearly every visceral organ, and its[…]

Smartwatch screen displaying Heart Rate Variability (HRV) data.

Christopher Bray - 12 February 2026 - 8:11 pm

The Body’s Hidden Signal: How Heart Rate Variability Reveals Your True Readiness

Heart Rate Variability (HRV) is one of the most reliable, non-invasive biomarkers for assessing the state of your autonomic nervous system (ANS). While heart rate[…]

Posts about Heart Rate Variability

Tuning the Vagus: Why Humming, Singing, and Gargling Are Workouts for Recovery

The Body’s Hidden Signal: How Heart Rate Variability Reveals Your True Readiness